diff --git a/files/nagios/collect_ceph_status.sh b/files/nagios/collect_ceph_status.sh
index 2f72a42c..a2e284e2 100755
--- a/files/nagios/collect_ceph_status.sh
+++ b/files/nagios/collect_ceph_status.sh
@@ -14,5 +14,11 @@ DATA_DIR="/var/lib/nagios"
 if [ ! -d $DATA_DIR ]; then
     mkdir -p $DATA_DIR
 fi
+DATA_FILE="${DATA_DIR}/cat-ceph-status.txt"
+TMP_FILE=$(mktemp -p ${DATA_DIR})
 
-ceph status --format json >${DATA_DIR}/cat-ceph-status.txt
+ceph status --format json >${TMP_FILE}
+
+chown root:nagios ${TMP_FILE}
+chmod 0640 ${TMP_FILE}
+mv ${TMP_FILE} ${DATA_FILE}